Capstan



J. DITSON.

CAPSTAN.

APPLICATION FILED S EPT.27, 1920.

Patented Feb. 15, 1921.

ATT NEY INVENTOR UNITED STATES PATENT OFFICE.

JESSE DITSON, OF LITTLETON, COLORADO, ASSIGNOR TO INGERSOLL-RANDCOMPANY, JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JER- SEY.

CAPSTAN.

Specification of Letters Patent. Patented Feb. 15, 1921.

Application filed September 27, 1920. Serial No.- 412,953.

To all whom it may concern;

Be it known that I, JEssE DITSON, a citizen of the United States,residing at Littleton, Arapahoe county, Colorado, have invented certainnew and useful Improvements in Capstans, of which the following is aspecification.

This invention relates to a power driven capstan and the primary objectsof the invention are to secure a simple and eflicient capstan withoutprojections or outside structure to interfere with or tangle the ropeand furthermore, to provide a capstan in which the gearing and drivingconnections, located in the base, are thoroughly protected from theweather.

Further objects will hereinafter appear and to all of these ends theinvention is shown in one of its preferred forms in the accompanyingdrawings, in which- Figure 1 is a vertical sectional elevation of acapstan showing so much of the apparatus as will serve to illustrate theinvention, and

ent invention, they have not been shown and need not be described. Thebase casting A as shown, is provided with the vertical stem C which 'ispreferably hollow, and connected to the base by the web D. An upwardlyextending protective flange E, formed on the base, surrounds the lowerportion of the stem and cooperates with the capstan drum F in the mannerto be described.

The capstan drum F has its bearings at the points G and H on the stem Cand is provided at its outer lower rim J with an internal groove Kforming a lip L extending over the upper edge 0 of the flange E forprotecting the interior of the capstan.

Flg. 2 is a transverse sectional view partly.

Suitable driving connections are provided in the base and in thisinstance, the drivin shaft P-is supported in the ball-bearings and R inthe frame S. A pinion T on the driving shaft P meshes with a gear U onthe counter shaft V having ball-bearings W and X in the frame S andprovided with a pin- 10n Y meshing with the internal gear Z on theinside of the lower portion of the capstan drum F. Any other suitabledriving connections could be provided for the drum. A cap a is adaptedto be secured to the end of the stem 0 over the drum as by means of thebolt 6 and an oiling aperture 0 1s provided in the cap.

Any motorprovided for the apparatus in the base casting and the gearingin said castmg, are thoroughly protected from the weather, and the baseof the casting may be filled with oil so that all wearing parts exceptthe capstan drum bearings, run in oil, leaving but one place, that is,the oiling operture c in the cap a of the structure, to be occasionallyoiled.

I claim:

1. A power driven capstan comprising a .base casting adapted to house amotor and provided with a hollow stem and an upwardly extending flangesurrounding the base of the stem, a capstan drum having bearings on saidstem and provided with a groove beneath its outer lower rim extendingover the upper edge of said upwardly extending flange on the basecasting for protecting the interior of the capstan, and

operative connections within the base casting tor driving said capstandrum.

2. A power driven capstan comprising a base adapted to contain a motorand provided with a stem and an upwardly extending flange surroundingthe base of the stem,

a capstan drum mounted for rotation on said.

stem and having a lip at its lower rim adapted to extend over the saidupwardly extending flange on the base for protecting the interior of thecapstan, and operative driving connections within the base.

In testimony whereof I have signed this specification.

JESSE DITSON.

